I am he, who did a fantastically stimulating DELFT CASTING
workshop with Brian Adam last June, [ more about this later ] who
cannot abide waste at any expense, who tried to reuse the burned
I found that with the whole class using the sand, and given that
we are by nature, wasteful when it comes to using the resources
of others, we tended to be over generous when scraping the burned
out sand from the mold so leaving a significant amount of still
good sand with that which was burned. Initially I tried to use it
as it was and found that the mold seemed to break down slightly
and give a rougher finish to the casting, so I then tried mixing
it well with clean sand [ 50, 50 ] and found that the results
were almost as good.
If anyone out there can tell us what the binding medium is, I
guess we would probably do somebody out of business, however,
when one is importing the stuff to this part of the world, one
doesn’t want to waste the resource, so I am continuing to
experiment with various oil based products 'till I strike a
suitable substitute binding medium.
Now about that course we did ! It was part of our Nelson
Polytechnic’s Winter Arts School, a five day program aimed at
like minded enthusiasts with a desire to learn from a group of
very talented craftspeople of whom Brian was one.
Brian’s workshop was aimed at passing on his knowledge and
skills of alloys and casting. We were a group of diversely
talented and experienced people who came away with a whole new
range of processes and enthusiasm to take our crafts and/or
professions to a new height. The whole course was well structured
around some very sound exercises based on the DELFT sand casting
process and traditional Japanese alloying processes which we
were able to adapt to our specific needs. Brian acted in the role
of tutor, mentor and facilitator. Thanks, Brian.